The Genus Erigeron
California Rayless Fleabane, Rayless Fleabane: Erigeron inornatus - Disk flowers only.
Scabland Fleabane (Erigeron bloomeri) is a rayless fleabane which is found in the Simcoe Mts. 10-20 miles east of the Klickitat River which so far has not been found on Mt. Adams or along the west bank of the Klickitat River.
Bitter Fleabane: Erigeron acris ssp. debilis - Ray flowers very short, erect, and often inconspicuous. Heads one to a few per stem, plants to 30 cm high.
Bitter Fleabane: Erigeron acris ssp. politus - Ray flowers very short, erect, and often inconspicuous. Heads several to many per stem, plants 30-60 cm high.